Vermont Gage 901200900 Class Zz Plug Gage Set 84 Pc

Product Description

The VERMONT GAGE 901200900 is an 84-piece Class ZZ plug gage set designed for precision measurement of hole diameters and slot widths in manufacturing and inspection environments. The set covers a diameter range of 0.833 to 0.916 inches with a minus tolerance of 0.0002 inches, meeting Class ZZ standards for go/no-go inspection work. Each gage is finished in black oxide steel for corrosion resistance and durability. A Certificate of Accuracy with NIST traceable calibration is included, making this set suitable for quality control programs that require documented measurement traceability. Machinists, quality technicians, and tool-room professionals are the primary users of this type of set.

This plug gage set is used in machine shops, tool rooms, and production inspection stations where hole diameters must be verified to tight tolerances. Typical applications include measuring hole diameters, calculating distances between holes, gaging slot widths and locations, performing no-go inspection checks, and setting micrometers, verniers, and other measuring devices to known references. The 84-piece range provides continuous coverage from 0.833 to 0.916 inches, reducing the need for individual gage procurement across that span.

Key Features

• Class ZZ tolerance class rated for go/no-go inspection and general-purpose hole measurement
• Diameter range: 0.833 to 0.916 inches across 84 individual gages
• Minus tolerance of 0.0002 inches per gage for consistent, repeatable measurement
• Black oxide steel finish for corrosion resistance and reduced glare during use
• Includes Certificate of Accuracy with NIST traceable calibration documentation
• Suitable for setting micrometers, verniers, and other precision measuring instruments

Compatibility

Designed for use in any inspection or machining environment requiring Class ZZ plug gages in the 0.833 to 0.916 inch diameter range. Compatible with standard gage handle systems used with pin and plug gage sets of this diameter class.

Installation Notes

Plug gages of this type are handled and used by quality technicians and machinists and do not require mechanical installation. Store gages in the provided case to prevent nicking or corrosion. Clean gages with a lint-free cloth before and after use to maintain measurement accuracy and prevent surface contamination. Calibration intervals should be established per your facility quality management system to maintain NIST traceable accuracy records.